supported by the National Natural Science Foundation of China(51802198)。
Lanthanide-doped nanoparticles,which contain lanthanide ions doped in an inorganic host,can generate wide wavelength range emissions corresponding to inner shell 4 f-4 f transitions of lanthanide ions[1–3].Unfortunat...
Supported by the Program for New Century Talents in University of China (NCET, 04-0978);the Chinese Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP 20040730019)
The photoluminescence quenching behaviors of 5D3-7FJ and 5D4-7FJ (J = 0―6) transitions of Tb3+ in YBO3:Tb under 130―290 nm excitation were systematically investigated. The results revealed that the quenching concent...
This work was supported by the National Natural Science Foundation of China (Grant Nos. 50171077, 10004014 and 10032040).
In-situ SR-XRD measurements revealed that the crystallization process in Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass is significantly different from that in tradi-tional glasses. Subsequent heating at 10 GPa conv...
The main progress made in the past dozen years or more in the study of reaction-diffusion (abbrev. RD) processes is surveyed. The processes are motivated from some typical models in the modern non-equilibrium statisti...
In spin-3/2 quadrupolar NMR systems, measurement of the satellite transitions (Ⅰ1/2) and may give information about quadrupole coupling parameters. In powder samples, the spectra of the satellite transitions cover ve...
I. TNTRODUCTIONThe emission spectroscopic method is usually used to measure spontaneous emission branching ratios. As emission spectra cannot be detected in atomic beams, the laser-induced fluorescence or ion detectio...
Project supported by the Science Fund of Academia Sinica
Carbenes play a very important role in some reactions of organic syntheses. It is a new trend of researches in carbene chemistry to study the chemical reactions of electronically excited carbenes, of which the results...
This letter deals with the branching processes with autocatalytic production of a chemical. We prove that the processes satisfy the Kolmogorov forward equation and there exist phase transitions. This offers an example...
Project supported by the Scientific Fund of the Director of Institute of Physics, Academia Sinica
I. INTRODUCTION In recent years, the A2BX4-type crystals have attracted much attention, for they have a series of phase transitions, especially the incommensurate phase in a certain temperature range. K2SeO4 is the mo...
An important discovery of the superconductivity in Ba-La-Cu-O system with transition temperature 30-35 K has been made by Bednorz and Miiller.After that extensive studies in searching for the new series of related sup...